Abstract: A method for reducing motion sickness of passengers during parabolic flight comprising the combination of known and novel methods for flying parabolic arcs and coordinating passenger behavior during parabolic flight including graduating from heavier to lighter gravity environments; flying one or more sets of parabolic arcs for each gravity environment; flying on a path generally parallel to the surface of the earth after each set of parabolic arcs; flying no more than twenty parabolic arcs; or having passengers lying supine when entering or exiting each parabolic maneuver.